If your blood pressure reading is high, you will probably be asked to come back for repeat blood pressure checks. If you have three visits with readings over 140/90 mmHG, you will be diagnosed with high blood pressure.
Some people’s blood pressure goes up when they are at the doctor’s office. If your doctor suspects that may be occurring, he or she may ask you to get some blood pressure readings at home. In some cases, he or she may recommend that you wear an ambulatory blood pressure monitor. This device measures your blood pressure regularly throughout the day as you go about your activities. It is usually worn for 24 hours, even while sleeping.